All the ants on earth weigh about as much as all the humans.

The total population of people who are alive on Earth hasn't even hit 8 billion. At the same time, there are 10 quadrillion (10,000,000,000,000,000) individual ants crawling around at any given time. According to wildlife presenter Chris Packham, who appeared on the BBC in 2014 to discuss this, when combined, all of those ants would weigh about the same as all of us humans.